Dogs will typically come into contact with the leptospira bacteria in infected water, soil, or mud, while swimming, passing through, or drinking contaminated water, or from coming into contact with urine from an infected animal.

zoonotic

Leptospirosis

one of the most common tick-transmitted diseases.
-inflammation in the joints

Borrelia burgdorferi - Lyme disease

The virus is shed in large amounts in the stools of acutely infected dogs for up to several weeks following infection. The disease is transmitted by oral contact with infected feces. Parvo can be carried on the dog’s hair and feet, as well as on contaminated crates, shoes, and other objects. When the dog licks the fecal material off hair, feet, or anything that came in contact with infected feces, he acquires the disease.

Parvovirus

highly contagious viral infection which affects the liver, kidneys, spleen, lungs, and eyes in dogs.
through direct-direct contact with infected saliva, urine, or feces either with your dog’s mouth or nose. Even a dog dish that has been licked clean can carry the virus. The tonsils and lymph nodes are the first body parts effected.

Hepatitis

virus is transmitted through contact with the nasal secretions of dogs that are infected with the disease.
-virus spreads fast
is a highly contagious respiratory disease that is frequently confused with kennel cough.